UNE-EN ISO 20312:2011 Petroleum and natural gas industries - Design and operating limits of drill strings with aluminium alloy components (ISO 20312:2011) (Endorsed by AENOR in November of 2011.)
2011UNE-EN ISO 20312:2011 Petroleum and natural gas industries - Design and operating limits of drill strings with aluminium alloy components (ISO 20312:2011) (Endorsed by AENOR in November of 2011.)